Suppression of superconductivity in zinc nanowires by bulk superconductors

被引:89
作者
Tian, M [1 ]
Kumar, N
Xu, SY
Wang, JG
Kurtz, JS
Chan, MHW
机构
[1] Penn State Univ, Ctr Nanoscale Sci, University Pk, PA 16802 USA
[2] Penn State Univ, Dept Phys, University Pk, PA 16802 USA
关键词
D O I
10.1103/PhysRevLett.95.076802
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Transport measurements were made on a system consisting of a zinc nanowire array sandwiched between two bulk superconducting electrodes (Sn or In). It was found that the superconductivity of Zn nanowires of 40 nm diameter is suppressed either completely or partially by the superconducting electrodes. When the electrodes are driven into their normal state by a magnetic field, the nanowires switch back to their superconducting state. This phenomenon is significantly weakened when one of the two superconducting electrodes is replaced by a normal metal. The phenomenon is not seen in wires with diameters equal to or thicker than 70 nm.
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页数:4
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